Universal battery pack



FIG. 1 is a three-quarter perspective view of the universal battery pack attached to the mobile computing device;

FIG. 2 is a perspective view of the universal battery pack in an alternate position, attached to the mobile computing device while acting as a stand for the mobile computing device; and,

FIG. 3 is another perspective view of the universal battery pack in an alternate position, attached to the mobile computing device while acting as a stand for the mobile computing device.

The broken lines showing the mobile computing device are for the purpose of illustrating environmental structure, and forms no part of the claimed design. 

The ornamental design for a universal battery pack, as shown and described in the Figures. 